1873 Rifle Problem; a "jam"... or not? in SASS Wire Posted September 2 11 hours ago, The Original Lumpy Gritz said: OP, how about details of the ammo you're using. OLG To show you how few times I've used the rifle in recent years, I still have a few boxes of Kinematics Research (ammodirect) .45 cowboy left. That dates me and that's what I've used. But the rifle is exhibiting the problem when worked without any ammo. I'll do the clean and lube and report.